Next Article in Journal
The Trends of Medical Care Expenditure with Adjustment of Lifestyle Habits and Medication; 10-Year Retrospective Follow-Up Study
Next Article in Special Issue
Correlation between Polycyclic Aromatic Hydrocarbons in Wharf Roach (Ligia spp.) and Environmental Components of the Intertidal and Supralittoral Zone along the Japanese Coast
Previous Article in Journal
Nicotine and Its Downstream Metabolites in Maternal and Cord Sera: Biomarkers of Prenatal Smoking Exposure Associated with Offspring DNA Methylation
Previous Article in Special Issue
Comparative Analysis of PM2.5-Bound Polycyclic Aromatic Hydrocarbons (PAHs), Nitro-PAHs (NPAHs), and Water-Soluble Inorganic Ions (WSIIs) at Two Background Sites in Japan
Open AccessArticle

Chemical Characteristics of Atmospheric PM10 and PM2.5 at a Rural Site of Lijiang City, China

1
School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
2
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(24), 9553; https://doi.org/10.3390/ijerph17249553
Received: 12 October 2020 / Revised: 14 December 2020 / Accepted: 16 December 2020 / Published: 20 December 2020
Emissions from biomass burning are very serious in Southeast Asia and South Asia in April. In order to explore the effect of long-range transport of biomass emissions from the Indochina Peninsula in Southwest China during the period of the southeast monsoon season and to find out the main pollution sources in local atmospheric PM2.5, a field campaign was conducted from 6–26 April 2011 in Lijiang, China. Twenty-four-hour PM10 and PM2.5 filter samples were collected, and inorganic ions, elements, and carbonaceous components (including organic carbon (OC) and elemental carbon (EC), polycyclic aromatic hydrocarbons (PAHs) and nitrated PAHs (NPAHs)) were measured. The monthly mean mass concentrations of particulate matter (PM) were 40.4 and 14.4 μg/m3 for PM10 and PM2.5, respectively. The monthly mean concentrations of OC and EC in PM10 were 6.2 and 1.6 μg/m3, respectively. The weekly mean concentrations of ∑PAHs and ∑NPAHs were 11.9 ng/m3 and 289 pg/m3, respectively, in atmospheric PM10 of Lijiang. The diagnostic ratios of PAH and NPAH isomers were used to analyze the sources of PAHs and NPAHs in PM10. The ratios of Benz(a)anthracene/(Chrysene+Benz(a)anthracen), Fluoranthene/(Fluoranthene+Pyrene) and Indeno(1,2,3-cd)pyrene/(Benzo(g,h,i)perylene+Indeno(1,2,3-cd)pyrene) were 0.45 ± 0.04, 0.61 ± 0.01, and 0.53 ± 0.03, respectively, indicating the contribution from coal combustion and biomass burning. The 1-nitropyrene/Pyrene (1-NP/Pyr) ratio was 0.004 ± 0.001, suggesting that the contribution to NPAHs mainly came from coal combustion. Sulfate was the most prominent inorganic ionic species, with monthly mean levels of 2.28 and 1.39 μg/m3 in PM10 and PM2.5, respectively. The monthly mean mass ratios of NO3/SO42− were 0.40 and 0.23 in PM10 and PM2.5, respectively, indicating that the contribution of atmospheric anions from coal combustion sources was much more important than that from other sources. Based on the relatively high SO42− concentrations and low NO3/SO42− ratios, combined with the data analysis of isomer ratios of PAHs and NPAHs, we can conclude that coal combustion, traffic, and dust were the major contributors to local atmospheric PM in Lijiang city, while biomass burning may also have contributed to local atmospheric PM in Lijiang city to some degree. View Full-Text
Keywords: PM10 and PM2.5; chemical components; PAHs and NPAHs; biomass burning; long range transport PM10 and PM2.5; chemical components; PAHs and NPAHs; biomass burning; long range transport
Show Figures

Figure 1

MDPI and ACS Style

Liu, Y.; Li, X.; Wang, W.; Yin, B.; Gao, Y.; Yang, X. Chemical Characteristics of Atmospheric PM10 and PM2.5 at a Rural Site of Lijiang City, China. Int. J. Environ. Res. Public Health 2020, 17, 9553. https://doi.org/10.3390/ijerph17249553

AMA Style

Liu Y, Li X, Wang W, Yin B, Gao Y, Yang X. Chemical Characteristics of Atmospheric PM10 and PM2.5 at a Rural Site of Lijiang City, China. International Journal of Environmental Research and Public Health. 2020; 17(24):9553. https://doi.org/10.3390/ijerph17249553

Chicago/Turabian Style

Liu, Yu; Li, Xurui; Wang, Wan; Yin, Baohui; Gao, Yuanguan; Yang, Xiaoyang. 2020. "Chemical Characteristics of Atmospheric PM10 and PM2.5 at a Rural Site of Lijiang City, China" Int. J. Environ. Res. Public Health 17, no. 24: 9553. https://doi.org/10.3390/ijerph17249553

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop